Finally my GTX780 is up and running perfectly again. I am a returning customer and as always ts get the job done on this unit too. Sent 2 units for repair to ts this time and both GTX 780 and GTX760 are running great again. I already know ts back on 2 years ago and he repaired this same unit back then. I even traveled from Kedah to his place to collect back my GPU back then after he repaired it. He did show me the tools and all the things that he used to repair mine and the others, pretty friendly guy I can say.

I read back some of the pages in this thread and I see some of the people here have similar symptom as my GTX780 which is, if using it for working or web browsing, no issue at all. But as soon as I ran some game, the whole PC will crash and restart automatically again. Then I decided to send it to ts for repair again and now it is working normally again. So, I highly recommend those who have issue with their GPU, get ts to repair them for you. He even provide a warranty in case something not working again after you tried it at home. One more thing, please directly whatsapp ts at his number to discuss the issue better with him. All the best to ts and if there are any issue with other GPU, I'll surely sent it to him for repair!